Don’t worry I am not going to say about the names RAM
and SAM but going to explain the two computer related terms, RAM
and SAM to you.
RAM (Random Access Memory) is really the main storage
and is the place where the programs and software we load gets stored. When the CPU
(Central Processing Unit) runs a program, it fetches the program
instruction from the RAM and carries them out. If the CPU needs to store the result
of calculations, it stores them in RAM.
RAM can have instructions READ from it by the CPU and also
it can have numbers or other computer data WRITTEN to it by the CPU. When we
switch off, whatever is stored in the RAM gets erased.
RAM is best known form of a computer memory. RAM is
considered ‘random access’ because anyone can access any memory cell directly
if we know the row and column that intersect at the cell. The opposite of RAM
is SAM (Serial Access Memory). SAM stores data as a series of memory
cells that can be only accessed sequentially (like a cassette tape). If the
data is not in the current location then the memory is checked until the needed
data is found. SAM works very well for memory buffers, where the data is
normally stored in the order in which it will be used (a good example is the
texture buffer memory on a video card). RAM data, on the other hand can be
accessed in any order.
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